Oxidation of SO2 by NO2 and air in an aqueous suspension of carbonA series of experiments has been performed using carbon black as a surrogate for soot particles. Carbon black was suspended in water and gas mixtures were bubbled into the suspensions to observe the effect of carbon particles on the oxidation of SO2 by air and NO2. Identical gas mixtures were bubbled into a black containing only pure water. After exposure each solution was analyzed for pH and sulfate. It was found that NO2 greatly enhances the oxidation of SO2 to sulfate in the presence of carbon black. The amount of sulfate in the blanks was significantly less. Under the conditions of the experiments no saturation of the reaction was observed and SO2 was converted to sulfate even in a highly acid medium (pH not less than 1.5).
Document ID
19830043975
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Rogowski, R. S. (NASA Langley Research Center Hampton, VA, United States)
Schryer, D. R. (NASA Langley Research Center Hampton, VA, United States)
Cofer, W. R., III (NASA Langley Research Center Hampton, VA, United States)
Edahl, R. A., Jr. (NASA Langley Research Center Hampton, VA, United States)
Munavalli, S. (Livingstone College Salisbury, NC, United States)